1. Basic material: EVA foam, PE foam, rubber foam, PU foam.
2. Top cover: Velet, cambrelle, visa, mesh, leather.
3. Optional plug: TPR pad, poron pad for shock absorption. 
4. Optional poliyou layer for anti-bacteria and odor free.
1 Inch Insole: 
1. Top layer: fabric. 
2. Bottom layer: EVA foam with 1 inch heel. 
3. Any color for choice.